CONTAINING AMMONIA. 



ter so readily into these combinations ; but a 

 considerable number of compound salts contain- 

 ing these bases are known, and perhaps, if suffi- 

 cient pains were bestowed upon the investiga- 

 tions, methods might be found of causing the 

 salts of these bases to enter into as many com- 

 binations with other salts as the salts of ammo- 

 nia and potash. 



Most commonly the compound salts consist of 

 an integrant particle of each of the simple salts 

 united together ; but to this law there are many 

 exceptions. It is not uncommon for three in- 

 tegrant particles of one of the salts to be united 

 with one integrant particle of the other salt. 

 The water of crystallization is seldom the amount 

 of the water in the two salts before combination ; 

 most commonly it is less, but in some rare in- 

 stances considerably greater. 



I shall divide this section into three parts. In 

 the first part, I shall exhibit the composition of 

 the compound salts which contain ammonia; in 

 the second, of those which contain potash ; and 

 in the third, I shall give the constituents of a few 

 compound salts which contain neither of these 

 bases. 



I. OF COMPOUND SALTS CONTAINING AMMONIA. 



1. Ammonio-sulphate of potash. This salt Ammoni - 



L T i sulphate of 



may be easily formed by dissolving potash. 



VOL. II. Dd 



